ever marching as to war

"I'm Steve's Achilles' heel."

The statement's delivered with no lack of awareness; he'd never say as much to the man himself, perhaps, not without due cause, but that doesn't make it any less true. The quickest way to manipulate Steve, to anger him, is to make a slight against Bucky in some way. Of course, the same holds true in reverse.

"Though frankly, if Stark's going to make noise about me, I'd rather just take care of it myself."